Setting rollers in spinning machines



E. C. THOMPSON ETAL SETTING ROLLERS IN SPINNING MACHINES May 12, 1959 2 Sheets-Sheet 1 Filed May 20, 1957 B... Ff ii "INVFNTORS: EZRA c" THOMPSON RN s r I. JAGGER 7 M THEIR ATTORNEY y 1959 E. c. THOMPSON EIAL 2,885,740

SETTING ROLLERS IN SPINNING MACHINES I I I *3 Q i i Q I I Q H. Q

mvzuflms EzRA-cJHo MPSON ERNESTTJAGGER THEIRATTORNEY United States Patent SETTING ROLLERS IN SPINNING MACHINES Ezra C. Thompson and Ernest T. Jagger, Newcastle upon Tyne, England, assignors to George Angus & Company Limited, Newcastle upon Tyne, England Application May 20, 1957, Serial No. 660,227

4 Claims. (Cl. 19-134) This invention relates to setting rollers in spinning machines.

Roller setting in spinning. means adjusting the distance between lines of drafting rollers, also called drawing rollers, especially between the first and second line of rollers, so that such distance apart is that most suitable to the length of the fibres being spun.

The object of the invention is to provide a contrivance wherewith correct roller setting can be determined in the drafting frame, also called the drawing frame, of a spinning machine, for any roving without having to adjust experimentally the distance apart between the long lines of drafting rollers.

For the above purpose, according to the invention, a frame to take one set comprising one first top drafting roller with its bottom roller, a middle top drafting roller with its bottom roller and a third top drafting roller with its bottom roller, is provided, having adjustably separable cap nebs for the first and middle rollers, adapted to be mounted in place of the normal cap nebs for one set of top rollers, after removal of such normal cap nebs and top rollers and be driven by the bottom rollers belonging to such removed top rollers, a roving guide being provided for diverting the roving through such applied set of drafting rollers.

The top rollers may be supplied by substituting the top rollers extracted from the normal cap nebs, removed to permit the contrivance to be mounted.

The contrivance is used by diverting rovings upwards and reeving them through the applied drafting rollers, and adjusting the distance apart of the first and second rollers, to suit the particular rovings. The distance apart of the applied cap nebs of the first and second rollers can then be measured, and all the normal cap nebs of all the first and second rollers can then be adjusted to the same distance apart, the contrivance having been dismounted.

A representative example of the contrivance for findiug the roller setting is shown, somewhat diagrammatically, in the accompanying drawing, in which:

Fig. 1 is a perspective view of the contrivance with the rollers absent, and

Fig. 2 is a sectional elevation on the line 22 of Fig. 1, with the rollers shown.

Element 4 is the normal shaft or guide rod of a drafting frame of a ring spinning machine, and from which two cap bars with the normal cap nebs and first, middle and third top rollers have been removed.

The roller-setting-determining contrivance has a U- shaped frame composed of two rods b, when in use clamped, by clamps c, at one end to the shaft a and united at the other end by a transverse bar d. Sleeves e sliding on the rods b carry cap nebs f for a top drafting roller g, Fig. 2, and a fluted bottom roller h. The cap nebs false take a synthetic-rubber-covered idler roller i. Further pairs of cap nebs i and k take top rollers l and m, bottom rollers n and o and idler rollers p and q, of middle and third drafting rollers.

2,885,740 Patented May 12, 1959 To determine the roller setting, the U-shaped frame b, d, after removal of the respective normal cap nebs with one set of first, middle and third top rollers from the drawing frame, is mounted with its cap nebs f, j and k in place of the normal cap nebs of the respective portion of the drafting frame and with the idler roller i, p and q in contact with the respective fluted bottom roller r, s and t, of the respective portion of the drafting frame.

In the contrivance of the present invention, the fluted rollers h, n and 0 correspond to the fluted rollers r, s and t of the frame itself and are driven thereby, through the idler rollers i, p and q. This arrangement is necessary because, in adjusting roller setting, the nip of each roller pair, i.e. top roller and fluted bottom roller, must be kept in the straight line of draft of the roving and to ensure this a fluted bottom roller must be adjusted with its respective top roller. A simpler c0n-. trivance, having only adjustable cap nebs for top rollers to rest directly on the fluted bottom rollers r, s and t of the frame itself, would not be practicable because either the fluted bottom rollers of the whole frame would have to be adjusted, which is what the invention seeks to avoid, or adjustment of a top roller alone would displace its nip around the respective bottom roller and bring the nip out of the line of draft. With the present arrangement, the nip of each top roller and substituted fluted bottom roller is kept constant by the neb caps in common and the idler rollers, during adjustment, can move around the fluted bottom rollers of the frame and still transmit drive therefrom without requiring adjustment of such frame rollers or spoiling the line of draft.

The cap nebs k are adjustable along and are held against displacement along the bars b, each by a grub screw k one of which is visible in Fig. 1, so as to have the same setting between the third cap nebs k and the second cap nebs j, as used in the particular spinning frame being tested.

After the contrivance has been placed in position, a roving u of the respective portion of the drafting frame is diverted through a roving guide v in an applied extension w of the normal traverse guide (not shown) and reeved through the applied drafting rollers to a thread guide (not shown).

The top rollers g, l and m used in the conten'vance may be, and conveniently are, the top rollers which have been removed with and from the normal cap nebs.

The sleeves e carrying the cap nebs f for the first rollers are displaceable along the rods b by a screw x, screwing through the transverse bar d and journalled in a transverse bar y, interconnecting the two sleeves e. The screw x has a knurled head 2, whereby it is turned.

Element j is a notched strut plate secured to one of the second cap nebs j to limit the descent of the frame b, d and its rollers, by encountering a plain section of the middle bottom roller s.

The optimum distance apart of the cap nebs f and j determined by adjustment of the contrivance can be measured by the rule f shown in Fig. 1, or otherwise, and the lines of drafting rollers of the entire drafting frame can be correspondingly adjusted.

Although the drawing shows transverse bars d and y which are inextensible, such bars may be adjustable in length, for instance by screw sleeves, to enable the contrivance to be used for setting spinning frames having difierent gauges, i.e. different horizontal distance between spindles.

We claim:

1. A contrivance for determining setting of rollers in a drafting frame of a spinning machine, consisting of a U-shaped frame composed of two rods united at one end by a transverse bar, a clamp on the other end of each rod, nebs displaceable along said rods taking a first top drafting roller, a first fluted bottom drafting roller and an idler roller, nebs fast on said rods taking a second top drafting roller, a second fluted bottom drafting roller and. an idler roller, nebs displaceable along said rods taking a third top drafting rod, a third fluted bottom drafting roller and an idler roller, screw means for displacing said nebs for said first drafting rollers towards and away from said nebs for said second drafting rollers, and means for holding against displacement said nebs for said third drafting rollers.

2. A contrivance for determining setting of rollers in a drafting frame of a spinning machine as claimed in claim 1, in, which a notched strut plate is secured to one of said, nebs.

3. A contrivance for determining setting. of. rollersin an drafting frame of a; spinning machine, consisting. of; a U-shaped. frame, composed. of two rods united; at one end by a transverse bar, aclamp onthe. other. end of each rod, sleeves sliding on said rods, a. transverse bar interconnecting said sleeves, a, screw screwing through said, transverse bar of said U-shaped frame and joura '4 nalled in said transverse bar interconnecting said sleeves, nebs on said sleeves taking a first top drafting roller, a first fluted bottom drafting roller and an idler roller, nebs fast on said rods taking a second top drafting roller, 21 second fluted bottom drafting roller and an idler roller, nebs displaceable along said rods taking a third top drafting roller, a third fluted bottom drafting roller and an idler roller, and screw meanslfor holdingagainst displacement said nebs for said third drafting rollers.

4. A contrivance for determining setting; ofrollers in a drafting frame of a spinning-machine as claimed in claim 3, in which a notchedstrut'plate is secured to one of said nebs.

References-Cited in the tile of this patent UNITED STATES PATENTS 

